3-Amino-4-[[4'-[(4-ethoxyphenyl)azo]-1,1'-biphenyl-4-yl]azo]-2,7-naphthalenedisulfonic acid disodium salt Chemical Properties

EPA Substance Registry System

C.I. Direct Orange 102 (6528-39-8)

3-Amino-4-[[4'-[(4-ethoxyphenyl)azo]-1,1'-biphenyl-4-yl]azo]-2,7-naphthalenedisulfonic acid disodium salt Usage And Synthesis

Preparation

4-(4-Aminophenyl)benzenamine double nitriding,3-Aminonaphthalene-2,7-disulfonic acid and phenol coupling, and then in the sodium hydroxide solution heat and pressure, with monomer (VCM) ethyl change.

Properties and Applications

bright orange. Moderate soluble in water and ethanol for gold orange, soluble in soluble fiber element, insoluble in other organic solvents. In the dark for the strong sulfuric acid, diluted light yellow for subtle stitching, precipitation; In nitric acid solution for orange. The dye solution to join strong hydrochloric acid have yellow olive brown precipitation; Add thick sodium hydroxide solution for gold orange, precipitation. Used for wool, silk and polyamide fiber dyeing, wool dyeing in neutral or weak acid bath.

3-Amino-4-[[4'-[(4-ethoxyphenyl)azo]-1,1'-biphenyl-4-yl]azo]-2,7-naphthalenedisulfonic acid disodium salt(6528-39-8)Related Product Information

• Viscouse Orange A
• C.I. Direct Orange 104
• Direct Green 99
• DIRECT ORANGE 102
• disodium 3,3'-[(3,3'-dimethyl[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[2,4-diamino-5-methylbenzenesulphonate] ]
• DIRECTGREEN98
• Direct Orange 102:1
• DIRECT ORANGE 1
• DIRECT ORANGE 118